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						Basic Audio Amplifier - eCircuit Center
						http://ecircuitcenter.com/Circuits_Audio_Amp/Basic_Amplifier/Basic_Audio_Amplifier.htm#:~:text=Basic%20Audio%20Amplifier%20%20%20Stage%20%20,Stage%20has%20a%20gain%20of%201.%20...%20
 
						
						
						
						Basics of Audio Amplifier - 1/9 - Engineers Garage
						https://www.engineersgarage.com/basics-of-audio-amplifier-1-9/
An Amplifier increases the strength of an audio signal by increasing its amplitude. The rise in amplitude is called Amplification. That is why, it is called Amplifier. An audio amplifier needs to be designed based on its application and required specifications.
 
						
						
						
						Basic Audio Amplifier - eCircuit Center
						http://ecircuitcenter.com/Circuits_Audio_Amp/Basic_Amplifier/Basic_Audio_Amplifier.htm
 
						
						
						
						An Introduction to Audio Electronics: Sound, …
						https://www.allaboutcircuits.com/technical-articles/introduction-audio-electronics-sound-microphones-speakers-amplifiers/
 
						
						
						
						ESP Amplifier Basics - How Audio Amps Work
						https://sound-au.com/amp-basics.htm
An amplifier - or an element of an amplifying device - is presented with the input signal, and compares it to a 'small scale replica' of the output signal. If there is any difference, the amp corrects this, and ideally ensures that the output is an exact replica of the input, but with a greater amplitude.
 
						
						
						
						Build a High Quality Audio Amplifier with ... - Circuit Basics
						https://www.circuitbasics.com/audio-amplifiers/
An audio amplifier must reproduce signals from 20Hz to 20kHz (although very few people except children can hear the entire range). So frequency response is usually taken to mean the amplifier must deliver its rated power output across this range with no more than a …
 
						
						
						
						Audio Amplifier Circuit - UC Santa Barbara
						https://web.ece.ucsb.edu/Faculty/rodwell/Classes/ece2c/labs/Lab%201a%20-%202C%202007.pdf
 
						
						
						
						Amplifiers - Learn About Electronics
						https://www.learnabout-electronics.org/Downloads/amplifiers-module-01.pdf
Amplifiers are used to increase the amplitude of a voltage or current, or to increase the amount of power available usually from an AC signal. Whatever the task, there are three categories of amplifier that relate to the properties of their output; 1. Voltage amplifiers. 2. Current amplifiers. 3. Power amplifiers.
 
						
						
							
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